*{
    margin: 0;
    padding: 0;
}
.index-main{
    width: 400px;
    height: 700px;
    border:solid 1px #2ab372;
    margin: 0 auto;
    position: relative;
}
.index-form{
    width: 400px;
    height: 470px;

}
.index-enter{
    width: 400px;
    height: 470px;
    position: absolute;
    top: 279px;

}
.index-autt{
    margin: 0 auto;
    width: 400px;
}

.index-mid{
    width: 400px;
    height: 50px;

}
.index-left{
    float: left;
    width: 50%

}
.index-right{
    float: left;
    width: 50%;
}
.index-p{
    font-size: 20px;
    line-height: 25px;
    margin-top: 12px;
    margin-left: 80px;
}
#index-in{
    width: 400px;
}
.index-input{
    width: 190px;
    margin: 0 auto;
    border-radius: 7px;
}
.index-button{
    border-radius: 7px;
    width: 100px;
}
.index-item{
    margin-bottom: 30px;
    margin-top: 20px;
}
.index-top{
    width: 400px;
    height: 190px;
    background: #9966FF;
}